| Shannon to Orzesze | 1,195.23 mi (1,923.54 km) |
| Shannon to Osowa | 1,120.80 mi (1,803.75 km) |
| Shannon to Ostroda | 1,186.99 mi (1,910.28 km) |
| Shannon to Ostroleka | 1,259.42 mi (2,026.84 km) |
| Shannon to Ostrow Mazowiecka | 1,276.73 mi (2,054.70 km) |
| Shannon to Ostrow Wielkopolski | 1,126.41 mi (1,812.78 km) |
| Shannon to Ostrowiec Swietokrzyski | 1,288.85 mi (2,074.20 km) |
| Shannon to Ostrzeszow | 1,135.34 mi (1,827.15 km) |
| Shannon to Oswiecim | 1,217.51 mi (1,959.39 km) |
| Shannon to Otwock | 1,261.35 mi (2,029.94 km) |
| Shannon to Ozarow Mazowiecki | 1,240.50 mi (1,996.39 km) |
| Shannon to Ozimek | 1,161.42 mi (1,869.12 km) |
| Shannon to Ozorkow | 1,181.94 mi (1,902.14 km) |
| Shannon to Pabianice | 1,191.44 mi (1,917.43 km) |
| Shannon to Parczew | 1,335.87 mi (2,149.87 km) |
